Fix comment in configure.ac. This was causing a warning during
configuration.
Somehow forgot HTML tags for Paragraph and Subparagraph.

Vincent, this is totally trivial and so should be fine.
Fix bug #8746: Images have to have alt tags.
Merge branch 'master' of git://git.lyx.org/lyx

# By Richard Heck
# Via Richard Heck
* 'master' of git://git.lyx.org/lyx:
  Fix bug #8746: Images have to have alt tags.
  Somehow forgot HTML tags for Paragraph and Subparagraph.
  Fix comment in configure.ac. This was causing a warning during configuration.